- Importance of vaccination- Immunized children help protect the health of the community, it helps stop the spread of the disease among those who are vulnerable. - Types of Immunity: A) Innate/ Natural Immunity: born with it, many viruses that affect other species do not affect them. ... - Micro organisms can be beneficial, pathogenic, or non-pathogenic - Pathogenic: disease causing BACTERIAL INFECTIONS Risk Factors for Bacterial Infection - Age: Individuals who are older in age, have an increased risk of bacterial infections - Nutritional Status: The body requires a balanced diet...